Can-forming mechanism



ep, 25 9 E23.

V. MAUCK CAN FORMING MECHANISM Filed April 14, 192ml 3 sheets-sheet 1NVENTOR l/lcro? /l/Quck,

Sept. A25 ,k 1923.

V. MAUCK CAN FORMING MECHANISM Filed April 14, 1921 3 SheatswSheet 2Mmmm Q V. MAUCK CAN FORMING MECHANISM Filed April 14, 1921. 3SheeS-Sheet 3 k! NVENTOR:

Patented Sept. 25, i923. i

: eTeS PATENT GFFEE.

VICTOR MAUCK, OF NORBISVTOWN, PENNSYLVANIA, ASSIGNOR TO JOHN WOOD MANU-FACTURING COMPANY, OF CONSHOHOCKEN, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

CAN-nonnina MECHANISM.

Application led April 14, 1921. Serial No. 461,274.

T 0 all whom t may concern.'

-Be it known that I, Vlo'ron MAUCK, a citizen of the United States,residing at Norristown, in the county of Montgomery and State ofPennsylvania, have invented certain new and useful Improvement inCan-Forming Mechanism, -whereof the following is a specification,reference being had tothe accompanyingdrawings.

My invention is especially designed and adapted for the formation ofVcans used in the transportation and storage of ice cream. Such cans areused by wholesale manufacturers to deliver ice cream, water ice, frozencustards, etc., to retail dealers,and are used by the latter ascontainers for such products while they are being dispensed; the emptiedcans being thereafter returned to the whole- Salers to be refilled andagain distributed. Therefore, such cans must be extremely durable towithstand the repeated rough handling and consequent extreme stressesand wear to which they are inevitably subjected by such hard usage.

Moreover, as cans charged with such perishable commodities must beretained in ice water or other refrigerant liquid, their bodies must bepermanently liquid tight,

`and, in order to prevent contamination of their contents, they must beadapted to be` instantly opened and closed to facilitate disl pensationof their contents. Furthermore, as it is customary to dispense ice creamand similar products by means of substantially hemispherical measuringscoops; such cans must be so designed that substantially all of theircontents may be readily -removed by such scoops.

Therefore, the obiect and effect of my invention is to provide canshaving the characteristics above contemplated. However, it is to beunderstood that I do not desire to limit my invention to such specificuse.

The process of making cans herein disclosed is claimed in my copendingapplication Serial 542,742 filed March l0, 1922, for-Letters Patent ofthe United States.

Inthe drawings; Fig. I is a perspective view of a can embodying myinvention and provided with a removable lid closure.

Fig. II is a vertical sectional view of the can and closure shown inFig. I, showing the substantially' sealed relation thereof.

Fig. III is a perspective view of a sheet metal cylinder' which is theblank from v whichv the body of the can shown in Figs. I and II isformed.

Fig. IV is a perspective view of a cylindrical ring of sheet metal whichis the blank adapted to form the flange to support and seal said lidclosure on the can body.

Fig. V is an elevation of the ring shown in Fig. IV, but partly expandedtoward its linal flanged form. y

Fig. VI is an elevation of the partly formed can body with the completedflanged ring fitted upon the top thereof; the bottom of said body beingflared to receive the bottom plate.

Fig. VII is a diametrical sectional view of a bottom plate adapted to befitted in the liared end of the can body shown in VviewA of said canbody and bottom plate,

similar to Fig. VIII, but showing the rim of the bottom plate partiallyspun over the bottom of the can.

Fig. X is a fragmentary, sectional view of substantially full size,showing the joint between the can body and the bottom plate as it existsin a finished can.

Fig. XI is a plan view of a spinning lathe and its appurtances embodyingmy improvement in can forming mechanism.

Fig. XII is a front elevation of the mechanism shown in Fig. XI.

Fig. XIII is a fragmentary vertical sectional view of the yokeddifferential plungers and their casing, indicated in Figs. XI and XII,whereby said expanding and supporting mandrel is advanced, to expand thecan body in its flange ring, held in such advanced position during theoperation of spinning the rim of the bottom plate over the can body, andsubsequently retracted to free the can.

Referring to Figs. I to X inclusive, which show a convenient form oficecream can constructed in accordance with my invention; the can body 1having the removable lid closure 2, conveniently provided with CII ' andVIH.

ting edges 9 to constitute a blank frei-n which may be formed the flangering 10,

as a lixture upon said canbody 1, as indicated' in Figfll, to supportsaid'lid closure 2 and` substantially hernietically seal the jointbetween .the bottoni edge ot said closure and the can, when in theposition shown in Fig. Il; Said flange ring blank expanded, by aApressing operation, vtrein theV cylindrical torni shown in Fig.Fito-the forni shown in F ig. V "then pushed upon said4 cylindrical canblankx until its upper edge is flush. with the top ot the latter.Thereupon,` the .expanded skirt 11 ot" said ring blank 10 is pressedinwardly, against said blank 5 until it is curled to lorin'thc toricbead12indicated in Figs. l, ILVVI blank o. However, l subsequently expandsaid can blank5 within said flaiige'ring 10,

slightly stretching the. metal of both otl said parts, to insure thatthey shall there-V at'ter remain iii intimate contact. Such expansionis, conveniently effected by'thrust ing the mandrel 13 into said blank5,A as indicated in Fig. VIII.

. l-lowever, during the aforesaid operation of forming saidbead 12 uponsaid can body .5; l tind itconvenient to expand the botvtom edge of saidblank 5 as indicated at 14' in Fig. V1, so that said blank will readilyfit over the bottom plate15 as shown in ing. viii.

Said bottom plate V15 is also formed trom primarily flat sheet metal, bypressing operations which tirst'cut a circular disk ot such metalfandthen distort it to the cylindrical Y forin shown in Fig. VH. lt is to beparticularly noted that the circumferentialedge 16 oit the cylindricalVportion 17 otsaid bottoi'n plate 15, which is presented upwardly in thecan against'the inner tace of the cylindrical wall of the latter, asshown in Figs. 17H1, 1X and X, issubstantially sharp so that there is nocrevice formed at the liunction Vof said blanks 5 and '15. The laredlower edge 1li-fof said 4blank 5 is-then constricted upon saidcylindrical portion 17 ofthe bottom plate, as shown inFig. VH1.

Yrlhereat'ter, 'the primarily plane annular iange 18 -o't said bottomplate 15 is bent over the adjacent edge ot said can body blank 5,lirst,as indicated in full lines inV That pressing operationV con-Astricts said ring bead 12 upon said canl F ig. IX, and, linally,to theform shown lin Fig. X wherein said annular ange 18 of the bottom pl-ate15 is cylindrical and in Contact with the outer surface of thecylindrical wall ot the can body 1; the cylindrical portion 17 ot' saidbottoni plate Vbeing., likewise in contact with the innerrsur- ,tace ot'said cylindrical wall of the can body 1. V.iis hereinafter described, lfind it convenient to thus distort said; bottoni plate flange18Vwhilespinning itV upon the mandrel 19 held under pressure -inopposition to said mandrel 13; while said inandrels 13 and 19 arerotated in coaxial relation. Y

Finally,y said can body l is coated, all over, witha iilm ot somematerial capable of resisting the corrosive eliect of water upon the`terric metal parts of the can above described. For-instance, I find itY'convenient to coat the Vcanwith such a nlm 2O ot block tin, asindicated-in F ig. X; so that the 'entire surfaces of Vsaid can 1 andits closure 2 are smoothly continuous and, .con-

sequently, may be Areadily cleanedyby wash ing them.

lilthouh there are various novel features l Y of procedure in theconstruction of the can above described; the claims in this case arelimited to thednechanisin and Aprocess whereby the top of the can blank5 and its ring 10 are expanded, and the bottom of the can constrictedupon its bottom pla3te-15 and the flange 18 of the Vlatter constrictedupon said can bodyas above described.

Said mechanism is shown in Figs. Xl and XH, wherein 2115 the base framesupportin the stationary headstock 22 having bearings 23 and 24 for thespindle 25 carrying the pulley 26. Said pulley is mounted to rotateloosely upon said spindle but inay be rigidly connected therewith bytheclutch 2T which is operable by the V li-and lever 28. Said spindle v25carries at its inner end said mandrel 19 Vabove describedwith referenceto Fig. Vil-l."

Said base trame 21 also supports the Vtail stock 30 which'mavbeadjuste'd thereon by means otrtherv hand wheels 32'aiid 83 but, -torthe purpose herein contemplated, Vsaid tail stock 30 remains instationary position upon said base frame; y Y A Said tail stockfSO hasthe bearinre's`35 and 36 ,tor the thrustplunger 37-which carries at itsfront end the Vidle spindle 38 upon which said mandrel abovedescribedwith reference to Figi. VIH, is rotatable. As shown in Fig-.'XHI; saidthrust plunger 37 extends throughthe stuiting box 4.0 into the chamber'-11 in the casing 4t2 and may be thrust forward under pressure ot.water or other lmotor fluid/admitted to said chamber Lt1. Said casing'4t2 has, in axial alinement with-saidchainber 11. a second chamber, 43,which is slightly smaller in Vdiameter than said chamber 11 and inwhichl the retractioo ll O

i io

i oV

' press the same inwardly to cylindrical forni i and in Contact witlithecylindrical portionV 17 o1n the bottom plate l5, as indicated inY Fie.VH1. Thereafter, theo erator ma- Vnipulates said Wheels. TGand 80 so asto Ycause said spinning roller to bend said ilangc 18, of the bottomplate 15, from the plane shown in dotted lines in F 1g. 1X, to the 1n-V-clined position shown in lull lines infF ig.

, and proceeds to spin said flange 1 8 to the cylindrical 'form shown inF X, in con- 15.'

tact with the outer surfaceot' said blank 5, thus completing thespinning operation.V

Thereupon, in order to release the can,

thus completed, from its engagement with' the mandrels 13 and 1911sshown in Fig. VIH; the operatorshifts the handle 56 of the valve 5a soas to establish connnunica-V Vtion'.between the chamber il of the thrustplunger 37 and the exhaust pipe 54. l/Vhere- A upon, the fluid pressureremaining upon Vthe 2li retracting plunger l5 retracts fthe latter, withsaid thrust plunger 37, to withdraw -V said mandrel 13 from the can andpermit.V fthe latter to be manually removed from said mandrel 19.Thereafter,.the can thus ,com-

pleted may fbe coated with a lcomposition adapted to lresist corrosion,and be provided with a lid 2, as above contemplated.

Therefore, it may be observed that the mechanism shown in Figs. XI toXHI inclusive'has the capacity for operation both as a press and as aspinning lathe, and I do not desire lto limit myselfthercto or to theparticular method of operation thereof above described, as, of course,it mayi be otherwise used. Moreover, it isobvious that lmodificationsVmay be made in the various details of construction and arrangement ofthe mechanism, Without departing from the essential 'features ot myninvention, as dened in the appended claims. V -5 'Ic,lai,m:VVV Y V l.The combination with a base trame; of

aVVhe'adstocl; mounted Y on said trame; a

spindle journaled Vin said headstoclr; means arranged to. rotate; saidspindle, including a loose pulley and a clutchinovable to connec't anddisconnect said pulley and spindle; a mandrel on said spindle adapted tohold afcan bottom plate; atailstocl: on said base frame; a thrustplunger mountedV to -re-V ciprocate' in said tailstocln-in axial aline-YV ment'with said spindle; a mandrel mounted to rotate at the inner endof said thrust V plungerand" arranged to engage the top of a 1 can; aplunger casing stationaryv onV said tailstock, having a thrust chamberin which saidthrustplunger is mounted to reciprocate, and a port openingintoy said Vthrust chamber; said plunger casing alsoV having aretracting chamber7 in axial .alinement with said retractingrchamber;means yoliing said f tivo plungeis for simultaneous reciprocation, s V

including cross heads on the respective plun-V gers and tension rodsadjustablyY rigidly 'con-V 'Y necting said cross heads; saidthrustplunger being` longitudinally adjustable With respect to said retractingplunger, and having .V Y

means arrangedftosecure itinadjusted position, including a nutengagingsaid thrust plungerV and abutting against its cross bar;

and .respective valves independently operableto admit and exhaust fluidthroughY said ports; whereby saidV tail mandrelmay beVVV tirust towardsaid headA mandrel, to engage..V a canbody between them, and beretracted tof release said body.

I 2. rlhe combination with abase'frame; of

a heads'toclrmounted on saidframe; a

-spindlejournaled in said headstocl; means arranged to rotate saidspindle; a head mandrel on said VYspindle adaptedto holda can bottomplatevya .tailstoclr'onV Vsaid 'baseVV frame; a thrust plunger mountedtoreciprocate in said tailstock, in axial Valinem'ent V.

with .said spindle; a tailV mandrel mounted, to rotate at the inner endof said thrust plunger and arranged to engage the" topA of af can; aplunger casing onr'said tailstock, having aVV thrust chamber Vin Whichsaid thrust plunger i'smouted toi reciprocate, and a port openingintosaid thrust'chain-V ber; said Vplungerj casing also having aretractingchamber, in axial alinement VWith:A VV

said thrust chamber, but of smaller diameter and separated therefrom,anda port-opening Ainto saidretractingchamber; a retracting plungermounted to reciprocate in said retracting chamber; means yoling said twoplungers for simultaneous reciprocation, including cross.V headsron Vthe'respective' plungers and tension rods Vadjustably rigidly connectingsaid cross heads; VsaidJtli'rust plunger beinglongitudinally adjustablelwith Vrespect to saidretracting plunger, and hav-V ingfmeans arrangedto secure it in adjusted position; and valve means operable to ad-V mitand exhaust Huid through saidVrports;

whereby said tail mandrel may be-'thrustA toward saidhead mandrel, toengageacan V V body between them, and be retracted to release saidbody.Y .V

3. The combination Withfa base Vfreine; of a headstock Vmounted on 'saidAframe;V a0 spindle journaled in said headstock; means arranged torotateV said spindle ;V af'rhead Vmandrel on saidspindle; a Vtailstockon said base frame; a thrust plunger mounted to mountedV touotate attheinnerVend of said tailstock, having a thrustfchamber in which;

lreciprocate in saidtailstocl; a tail:mandrel`YV V thrust plunger; a Yplunger casing on said -V is() .Gil

C li

said thrust plunger is mounted to reciprol cate, and a port openingintosaid thrust chamber', said plunger casing also having al reti-actingchamber, and a port opening into said retracting chamber; a .retractingplunger mounted to reciprocate in said retracting chamber; meansyolring'said'` two plungers for simultaneous reciprocation; and valvemeans operable to admit and exhaust fluid through said ports; wherebysaid tail mandrel may be thrust toward said head mandrel, to engagea canbody between them, and be retracted to release .said body- 4. T hecombination with a base iframe; of

a headstock mounted on said frame; a rotary spindle journaied in saidheadstock; a head mandrel on said spindle; a tailstock on Vsaid baseframe; a thrust plunger mounted to reciprocate in said tailstock; a tailmandrel mounted vto rotate at the inner end of said thrust plunger; aplunger casing on said tailstoclr, havingl a thrust chamber in whichsaid thrust plunger is mounted to reciprocate, and a port opening intosaid thrust chamber; said plunger casing also having a retractingchamber, and a port opening into said retracting chamber; a retractingplunger mounted to reciprocate in said retract-ing chamber; meansyolring said two plungers Jior simultaneous reciprocation; and valvemeans operable to admit and exhaust fluid through said ports; wherebysaid tail mandrel may be thrust toward said head mandrel, to engage acan body between them, and be retracted to release said body; 5. Thecombination with a base frame; of

a headstock mounted on said frame; a head spindle journaled invsaidheadstoclr; means arranged to rotate said spindle; a tailstock on saidbase frame; a thrust plunger mounted to reciprocate in saidtailstocln'toward and away from said head'spindle; a tail spindlemounted to rotate at the inner end or" said thrust plunger; a plungercasing on said frame, having a thrust chamber in which said thrustplunger is mountedto reciprocate,V and a port opening into said thrustchamber; said plunger casing also having a retracting chamber, and aport opening into said retracting chamber; a retracting plunger mountedto reciprocate in said retractingchamber; means yoking said two plungersfor simultaneous reciprocation; and valve means operable to admit and'exhaust iiuid through said ports; whereby said tail spindle may bethrust toward said head spindle and be retracted.

G. The combination with a base frame; of a headstock mounted on saidframe; a

Y spindle journaled in said headstock; means arranged to rotate -saidspindle; a head mandrel on said spindle; a tailstoch` on said Vbaseframe; a thrust plunger mounted to reciprocate in said tailstocki; atail mandrel mounted to rotate at the inner end of said thrust plunger;a plunger casing on said tailstoclr, having a thrust chamber in whichsaid thrust plunger is mounted to reciprocate, and a port opening intosaid thrust chamber; said plunger casing also having a retractingchamber, and a port opening into Vsaid retracting chamber; a retractiugrplunger mounted to reciprocate in said rt iacting chamber; means yokingsaid two plungers for simultaneous reciprocation; and waive meansoperable to admit and exhaust fluid through said ports; wherebysaid tailimandrel may bethrust toward said head mandrel, to engage a can bodybetween them and be retracted to vrelease said bedr; a sp ning roller,mounted to rotate ou an parallel with the common axis of said mandrels;and means, on said base frame, arranged to shift said roller, includinfga shaft carrying it, a longitudinal slide, carrying said shaft andhaving screw means arranged to more it axially, and a cross slide`barrying said longitudinal slide and having screw means arranged to movesaid shaft toward and away from said mandrel axis; said slides beingcapable oi' simultaneous movement.

7. The combination with a base frame; of a headstock mounted on saidtrame; a rotary spindle journaled in said headstock; a head mandrel onsaid spindle; a tailstock on said base trame; a thrust plunger mountedto reciprocate in said tailstock; a tail mandrel mounted to rotate atthe inner end or" said thrust plunger; a plunger casing on Vsaidtailstock, having a thrust chamber in which said thrust plunger ismounted to reciprocate, and a port opening into said thrust chamber;said plunger casing also having a retracting chamber, and a port openinginto said retracting chamber; a retracting plunger mounted toreciprocate in said retracting chamber; means yolting said two plungersfor simultaneous reciprocation; and valve means operable to admit andexhaust fluid through said ports; whereby said tail mandrel may bethrust toward said head mandrel, to engage a body between them, and beretracted to release said body; a spinning roller, mounted to rotate onan axis parallel with the common axis ot said mandrels; and means,onsaid base frame, arranged to shift" said roller, including a shaftcarryingV it, i a slide,` having screw means arranged to move said shaftaxially, and a cross slide, having screw means ar- .ranged to move saidshaft toward and away `for simultaneous reciprocation; and valve meansoperable to admit and exhaust fluid throughV said ports; whereby saidtail spindle may be thrust toward saidV head spindle, and be retracted;a spinning roller; and slide means, on said base trame, are ranged toshift said roller, longitudinally and transversely. Y 9. Thecombina-tion with a base frame; ot a headstoclr mountedon said frame; arotary -spindle journaled in said hcadstock; aftailstock on said baseframe; a thrust plunger mounted to reciprocate in said tailstock; avtail spindle mountedY to rotate at the inner end of'said thrustplunger; a plunger casing,

having a thrust chamber in which said thrust plunger is. mounted Vtoreciprocate, and aport 4opening into saidfthrust chamber; said plungercasing also having a retracting'fchamber, and a port opening into'Y saidretracting chamber;V a retracting plunger mounted to reciprocate in saidretractingA chamber; means yoking .said -tvvo plungers for simultaneousreciprocation;

and valve means operable'to admit and e-z- Y haust fluid through saidports;` whereby said tail spindle may bethrust toward sai-d headspindle, and be retracted; a spinning' roller; Vand manually operable.meansj on said base frame, arranged to shift Vsaid roller toward andaway from said spindles.

ln testimony whereof,` I have hereunto signed my name at ConshohockemPennsylvania, this 5th day of April, 1921.

Vieron Manoir,

Witnesses:

- ANNA T. SCHARFE, 4JULIA T. Maynas.

